Hi!
I haven’t bumped into this for a long time, but now it seems that when I want to export to pdf in vector, the hatches are on top of other linework after export. The only way to fix it is to change the draw order, but the scary thing is that print doesn’t correspond with display preview. Or are there some things that can affect this? Transparency, far from origin, other things that one might check?
Petr
It actually should corresond with what you see on display preview. Draworder ist the way to go.
Do you use “print disply” to get more precise preview?
Send some examples it is hard to tell, and bugs do exist with printing 
Below are two screenshots. The first one shows what I see, the second one is a snippet from a PDF. The hatches clearly cover everything else. Even though the display shows it correctly. Draw order is a fix, but the problem is that pdf export doesn’t give what I see, so it is a try-error approach.
That is indeed very weired, i never had this problem.
How do you control draw order? Only with layers or with display order commands as well?
I would a need the file in order to check it quickly!
Is your rhino version up to date?